OAA can't process the testing RPM package

[jan-cerny]

Version:

current upstream rhel9-branch branch as of 2023-04-05 as of HEAD 6fbab80

Steps to reproduce:

1. serve testing files as a web server (cd testing_files ; python3 -m http.server)
2. build updates image from your rhel9-branch: ./create_update_image.sh install_addon_from_repo
3. ./reanaconda.py prime --sensible --tree http://<YOUR_URL>/released/rhel-9/RHEL-9/9.1.0/BaseOS/x86_64/os/
4. /reanaconda.py updates /home/jcerny/work/git/oscap-anaconda-addon/update.img
5. choose language, open the Security policy scope, in this scope, click Change content, insert http://10.0.2.2:8000/separate-scap-files-1-1.noarch.rpm, click Fetch

Actual results:

Error message "Invalid content provided. Enter a different URL, please" appears in the window.
Moreover, there are log items in /tmp/anaconda.log. Notice mainly the error at the bottom of this screenshot.

Additional information:

This problem doesn't happen with the clean RHEL 9.1 (ie. with no update image).